公开(公告)号：US20240371620A1

公开(公告)日：2024-11-07

申请号：US18552695

申请日：2022-11-15

Applicant: AUTOBIO LABTEC INSTRUMENTS CO., LTD.

Inventor： Keya CAI ,  Xiangguang LI ,  Yuanhe SHANG ,  Lele HAN ,  Shichuang CHEN ,  Yunzhao WU ,  Ruifeng ZHANG ,  Cong LIU

IPC: H01J49/02 ,  H01J49/00 ,  H01J49/06 ,  H01J49/22

Abstract: A method and a system for selecting ions in a mass spectrometer. The method comprises: applying a first voltage to a deflection conductor to generate a deflection electric field at the deflection conductor, where ions are deflected to a trajectory not reaching the detector when flying through the deflection electric field; maintaining the first voltage applied to the deflection conductor to deflect non-target ions which fly out of the acceleration electric field, in response to detecting that a pulse synchronized with a laser is outputted; applying a second voltage to the deflection conductor to stop generating the deflection electric field and enable target ions to reach the detector, in response to the target ions flying out of the acceleration electric field; and applying the first voltage to the deflection conductor, in response to all target ions flying past the deflection conductor.